A222615 Number of nX7 0..3 arrays with no more than floor(nX7/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..3 order

17, 615, 11421, 1409334, 43650470, 5996281816, 253864183756, 50378849363475, 2844661497709464, 693856544236239459, 43788284924757109026, 11378443951727769866855

Offset

1,1

Comments

Column 7 of A222616

Links

Table of n, a(n) for n=1..12.

Example

Some solutions for n=3
..0..0..0..1..2..2..2....0..1..1..2..2..2..2....0..1..1..1..1..1..1
..0..3..2..2..2..2..2....0..3..2..2..2..2..2....0..1..1..1..1..1..1
..0..2..2..2..2..2..2....2..2..2..2..2..2..2....2..1..2..1..1..1..1

Crossrefs

Sequence in context: A330516 A142744 A219090 * A012219 A349783 A219075

Adjacent sequences: A222612 A222613 A222614 * A222616 A222617 A222618

Keyword

nonn

Author

R. H. Hardin Feb 26 2013

Status

approved